3D ultrasound

on 26 Oct 2021

% See comment section for a more complete version with comments.

% Inspired by Massive Attack's Teadrop music video.

% https://youtu.be/u7K72X4eo_s?t=53

[x,y,z]=sphere(600);

v=[1,1];

d=sqrt((x(:)-[-.4,.4]).^2+(y(:)+v).^2+(z(:)-v/5).^2); % distance to each eye

f=@(x,A)1./((1+.4.*exp(A*x+4)).^2); % Logistics fcn for eye orbits and lids

q=[f(d/.7,-9)*.2+.8,f(d/.3,-7)*-.1+1]; % distance to sphere center [Orbits, lids]

[T,P,R]=cart2sph(x,y,z);

R(:)=prod(q'); %#ok<UDIM> combined profile

[a,p,c]=sph2cart(T,P,R);

surf(a,p,c,EdgeA=0)

colormap copper

light

material dull

% axis equal

camva(2)

view([7,14])